GNU Radio

GNU Radio is a chargeless software toolkit for acquirements about, building, and deploying software-defined radio systems. GNU Radio is appear beneath the GPL adaptation 3 license.

GNU Radio is a arresting processing package, which is broadcast beneath the agreement of the GNU General Public License. The ambition is to accord accustomed software humans the adeptness to 'hack' the electromagnetic spectrum, that is, to accept the radio spectrum and anticipate of able means to use it.

As with all software-defined radio systems, reconfigurability is the key feature. Instead of purchasing assorted big-ticket radios, a individual added all-encompassing radio is purchased, which feeds into able arresting processing software (GNU Radio, in this case). Currently alone a few forms of radio are bifold in GNU Radio, but if one understands the algebraic of a radio manual system, one can reconfigure GNU Radio to accept it.

The GNU Radio activity utilizes the Universal Software Radio Peripheral (USRP) which is a computer-based transceiver absolute four 64 mega sample-per-second (MS/s) 12-bit analog-to-digital (A to D) converters, four 128 MS/s 14-bit digital-to-analog (D to A) converters, and abutment chip for the interface to the host computer. Depending on the model, the host-to-usrp interface is either USB 2.0 or 1 Gigabit Ethernet. The USRP can action signals up to 25-MHz wide, depending on the model. Several transmitter and receiver constituent babe boards are accessible accoutrement assorted bands amid 0 and 5.9 GHz. The USRP was developed by Matt Ettus.

History

Started in 2001, GNU Radio is an official GNU project.1 Philanthropist John Gilmore initiated and has sustained GNU Radio with the funding of $320,000 (US) to Eric Blossom for code creation and project management duties.

GNU Radio began as a fork of the Pspectra code that was developed by the SpectrumWare project at the Massachusetts Institute of Technology. In 2004 a complete rewrite of the GNU Radio was completed, so today GNU Radio doesn't contain any of the original Pspectra code. Also of note is that the Pspectra codebase has been used as the foundation of the commercial Vanu Software Radio.

In September 2010, Eric Blossom stepped down as project manager and was replaced by Tom Rondeau.2 Tom is a graduate of Virginia Tech and is an expert in Cognitive radio and a long time contributor to GNU Radio.

Burning Man

During the Burning Man anniversary in August 2008, a week-long reside acreage analysis was run beneath appropriate acting approval license.78 Although this analysis had not been advised to be accessible to Burning Man attendees in general, a amount of individuals in the about succeeded in authoritative absolute out-going calls afterwards a mis-configured Asterisk PBX accession accustomed analysis calls prefixed with an all-embracing cipher through.9 The Burning man analysis auspiciously affiliated about 120 buzz calls to 95 altered numbers in breadth codes over North America.

At the 2009 Burning Man festival, a beyond analysis bureaucracy was run application a 3-sector system.10 For the 2010 festival, an even beyond 2-sector 3-carrier arrangement was tested.

At the 2011 festival, the OpenBTS activity set up a 3-site arrangement with VSAT aperture and formed in affiliation with the Voice over IP casework aggregation Voxeo to accommodate abundant of the off-site alarm routing.1112

edit Niue

During 2010, an OpenBTS arrangement was assuredly installed on the island of Niue and became the aboriginal accession to be affiliated and activated with by telecommunication company. Niue is a actual baby island country with a citizenry of about 1,700 - too baby to allure adaptable telecommunications providers. The amount anatomy of OpenBTS ill-fitted Niue, which appropriate a adaptable buzz account but did not accept the aggregate of abeyant barter to absolve affairs and acknowledging a accepted GSM basestation system.13

In March 2011, the individual BTS arrangement was removed after the permission of its buyer and replaced with a bartering band-aid from arrangement integrator Challenge Networks based about a bartering arrangement from bell-ringer Lemko. This backup activity was adjourned absolutely with aid from the government of New Zealand. As of September 2011, the calling ante on this new arrangement are top abundant to acutely absolute its use by a lot of Niueans.

Version history

This is the adaptation history, latest first:

Version Date

3.4.0 23/09/2011

3.3.0 06/03/2010

3.2.2 07/15/2009

3.2.1 07/06/2009

3.2 05/24/2009

3.1.3 08/23/2008

3.1.2 03/24/2008

3.1.1 11/05/2007

3.1.0 10/22/2007

3.0.4 07/27/2007

3.0.3 03/01/2007

3.0.2 11/15/2006

3.0.1 11/08/2006

3.0 10/08/2006

2.8 04/15/2006

2.7 04/03/2006

2.6 12/09/2005

2.5 03/03/2005

2.4 02/02/2005

2.3 11/04/2004

2.2 10/11/2004